Experimental Investigation on Mechanical Behavior of Az91c Metal Matrix Composite Reinforced With B4c

Authors

Nagallapati Jaya Krishna
Research Scholar, Vellore Institute of Technology Vellore, Tamil Nadu, India.

Dega Nagaraju
Associate Professor, SMEC, Vellore Institute of Technology Vellore, Tamil Nadu, India.

Abstract

The magnesium based composite materials plays an important role in aerospace and automobile industries because of their low density, stiffness & high specific strength. These hybrid composite materials were needed to increase the strength, surface finish, machinability, corrosion resistance etc. To address such problem this work has been focused on the preparation of magnesium based metal matrix composite materials AZ91C reinforced with the B4C with two different proportions which are prepared by using the casting process. For the characterization of the prepared Mg based MMCs various tests like tensile test and hardness test have been performed on three model sample specimens of namely AZ91C(100%)+B4C(0%). AZ91C(98%)+B4C(2%) And AZ91C(96%)+B4C(4%). It was found that the compressive strength is and hardness is decreased due to addition of the B4C to the matrix alloy AZ91C while tensile strength is increased. The tensile strength is increased by 15.58% with the addition of 4% B4C when compared with 2% of B4C and also hardness is increased by 31.49%. The compressive strength is decreased by 41.43% with the addition of 4% B4C when compared with 2% of B4C.